Pan-making machine



(No Modem J. S; BIRT.

PAN MAKING MACHINE.

No. 525,383. Patented Sept. 4, 1894.

1 Witnesses: M Inventor WK v H1 WWYAEZEITGY m: uomgr mzws'ou. morourua.wnvimmon. n cy UNITED STATES P TE T OFFICE.

. JOHN S. BIRT, OF ARLINGTON, INDIANA, ASSIGNOR TO F. & L. KAHN 6r BROS,OF HAMILTON, OHIO.

PAN-MAKING MACHINE.

SIEOIFIGA'IION forming part of Letters Patent No. 525,383, datedSeptember 4, 1894.

Application filed June 16 1894. Serial No. 514.734. (No model.)

To all whom it may concern.-

Be it known that I, JOHN S. BIRT, of Arlington, Rush county, Indiana,have invented certain new and useful Improvements in Pan-' MakingMachines, of which the following is a specification.

This invention relates to improvements in that class of machinesemployed by sheet metal Workers in making rectangular baking anddripping pans, and the improvements will be readily understood from thefollowing description taken in connection with the accompanyingdrawings, in which Figure 1,is aplan of a machine exemplifying myimprovements; Fig. 2, an end view of the same, showing the right handend of Fig. 13' and Fig. 3, a vertical transverse section of the machinein the plane of line a, of Fig. 1, looking toward the left. ,Fig. 3 isdesigned to illustrate the capacity for movement of the various partsrather than the relative position of the parts during their movements.

In the drawings:1, indicates a fixed base part: 2, housings risingtherefrom at each end: 3, a long table, having a length in excess of thegreatest length of sheet to be folded and having a width equal at leastto the greatest Width of flanging which is to be done on a pan: 4,pivots uniting this table at each end of the housings 2 so that thefront edge of the table is capable of a rising and falling motion: 5,pivots at each end of the table 3, the common axes of these two pivotsbeing in line with the upper front corner of the table 3: 6, afolder-bar lying along the front of the table 3, the top of the twobeing even, and the rear edge of the folder-bar coming against the frontedge of the table 3, the folder-bar being united to the table by thepivots 5: 7, disks formed upon the folder-bar, at the pivots 5, and withtheir axes coincidentwith those pivots: 8, a lever handle projectingtransversely from folder-bar 6, whereby the folder-bar may be rocked onpivots 5. 9, notches or recesses in the lower peripheries of the disks7: 10, rests supported by the bed and having, preferably, the form ofwheels, the upper periphery of these rest-wheels engaging the notches 9in the disks of the folder-bar, the rests being of such height as, whenthe folder-bar is' down, to support the folderbar 6 and table 3 in alevel position: 11, adjusting screws forming stops to limit the descentof the front edge of the folder-bar: 12, forming gages secured to theupper surface of folder-bar 6 and adjustable along the same, by means ofbolt and slot arrangement, these forming gages being beveled upon theirinner faces so that the space between them is wider at the top than atthe bottom: 13, a back-bar forming, normally, a rearward continuation ofthe table 3: 14, pivots at each end of the back-bar 13, whereby it issupported in the housings 2 and rendered capable of being tipped back asindicated in Fig. '3: 15, forming gages secured to the upper surface ofback-bar 13 by bolt and slot arrangement so as to be adjustable alongthe same, these gages projecting, normally, forwardly and somewhatabovetable 3 and to the front edge thereof, and presenting verticalfront faces and having vertical outer faces converging forwardly at suchangle as to correspond with the bevel on the inner faces of forminggages 12 when folder-bar 6 is turned back so that forming gages 12comevon top of table-3 and alongside of gages 15; 16, a lever handleattached to back-bar. 13 by means of whichthe back-bar may be rockedupon its pivot 14: 17, a gage secured to the upper surface of back-barl3and projecting forward over and somewhat above table 3 and to the frontedge of thattable: 18, a lock in the form of a lever mounted on the baseand hooking over a portion of the front edge of back-bar 13 and holdingit down to normal position: and 19, an upwardly open narrow groove intherear edge of back-bar 13.

Normally, folder-bar 6 and back-bar 13 are both down, they inconjunction with table 3. then forming a continuous flat surface. Thesheet for the pan having been properly cut is now taken in hand and oneof its edges set down into the groove 19 and the sheet bent backwardlyand downwardly, thus forming a booking flange upon the edge of the sheetfor the reception of the wire which is to strengthen the pan. The otherthree edges of the sheet are then to be treated in the same way. Ifdesired, this flanging of the rim of the pan maybe deferred until afterthe sheet has been folded into pan form.

Back-bar 13 being tipped back lifts gages 15 and 17 from table 3 and oneedge of the sheet is now laid upon table 3 with its folding line evenwith the front edge of the table, gages 12 being separated so as not tointerfere with the width of the sheet beingoperated upon. Back-bar 13 isnow turned down again to horizontal position, bringing gages 15 and 17down over the rearwardly projecting margin of the sheet and the back-baris then locked by lock 18, thus preventing the rising of those gages.Folder-bar 6 is now tipped up, resulting in a turning upward of the bodyof the sheet while its rearward margin is caught under the gages 15 and17, thus producing one turned up flange to the pan. When folder-bar bwas down, notches 9 engaged wheels 10, but the first effect of thetilting of the folder-bar was to cause disks 7 to ride upon the wheelsand thus elevate the pivots 5 and, consequently, the front edge of table3, therebypinching the sheet between the table and the gages 15 and 17at the initiation of the folding portion. The opposite edge of 3 the panis then turned up in a similar manner. Gages 15 are then set so thattheir front width will correspond with the interior width of the pan,gage 17 being removed if necessary, or a narrower one put in its place.Gages 12 are then set to correspond with the width of the pan. The endofthe pan sheet is then presented over table 3 and under gages 15, as inthe former case, and when folder-bar 6 is turned 1 up, as before, theend flange becomes formed i on the pan, gages 12snugging the sideflanges of the pan against the outer faces of gages 15, the outwardlyprojecting surplus corners of the pan becoming pressed against the uppersurface of table 3 by the rear faces of gages 12 which have becometurned over and down toward the table. The other end of the pan is thentreated in the same way, leaving the pan with its four flanges but withits surplus corner metal projecting outwardly. The pan is then setedgewise transversely across table 3 with its end even with the front ofthe table and its side metal engaging under an end of gage 17,a cornerof gage l7then fitting up in an 1 interior corner of the pan, one of thesurplus corners of the pan thus projecting out forwardly over folder-bar6. Folder-bar 6 is then turned up, thus turning the surplus corner metalup against the side of the pan. This operation is then repeated with theother three corners of the pan, leaving the pan complete so far asfolding is concerned. The wire, properly bent, may then be placed in therim fianging of the pan and the flanging swaged in by the usual plan butit may be done directly upon this machine, by getting gages 12 out ofthe way and laying the pan top down on folder bar 6 with the wire partprojecting over the front edge of table 3 and then working handle 16 tobring gages 15 M17 down, thus swaging the rim of the pan inwardly aroundthe wire. It will be observed that the machine, within its limits ofcapacity is suited for all sizes of pans, and that it performs all ofthe operations upon the pan except the riveting of the cornersif cornerriveting is to be done.

I claim as my invention- 1. In a pan forming machine, the combination,substantially as set forth, of a table, a folder-bar at the front edgethereof and attached thereto by pivots in line with said edge,

a back-bar at the rear of the table and mou nted on pivots at each end,forming gages secured to the back-bar and projecting over and to thefront edge of the table, and handles for rocking the former-bar andback-bar upon their pivots.

2. In a pan forming machine, the combination, substantially as setforth, of a table, a folding-bar pivoted thereto, a back-bar supportingforming gages projecting over and to the front edge of the table, and anupwardly open groove in said backbar.

3. In a pan forming machine,,the combination, substantially as setforth, of a pivoted table, a folder-bar pivoted thereto, adjustableformer gages mounted on the folder-bar, a back-bar pivoted at the rearof the table, two adjustable former gages mounted on the backbarandprojecting over the table and to the front edge thereof, and a formergage secured to the back-bar between the other two gages thereon andsimilarly projecting over the table.

JOHN S. BIRT.

Witnesses:

FRANK WALTMAN, I. N. DECKER.

